欧洲环形交叉口几何设计研究

Research About the Geometrical Design of Europe Roundabout

环形交叉因其在安全、环保、美观方面较传统停车控制、信号控制平交口有较为突出的优势,在欧美被更多的工程师采用。通过介绍欧洲环形交叉口发展过程,分析环形交叉口中心岛、环形岛、分流岛及进出口等各组成部分几何特性,最终得出环形交叉口各组成部分尺寸确定方法,并与中国环岛设计方法进行了对比,对中国环形交叉设计理念的改进及相关企业进一步开拓海外市场具有一定的指导意义。

Because of its safety,environmental protection and beauty,the roundabout has obvious advantages than traditional parking control and signal control intersection. It has been adopted by more engineers of the Europe and the United States.Through the introduction of the development about Europe's circular intersection,the geometric characterization of the center island,wake island,shunt island,entrance and exit about the roundabout were analyzed,and the author obtained the method to determine the dimensions of roundabout's parts,and compared with the design method of that in China,which would provide the guidance for improving the design concept of China and companies further exploring overseas markets.